Handheld vacuum base



FIG. 1 is a front isometric view of a handheld vacuum base showing the claimed design.

FIG. 2 is a left elevational view of the handheld vacuum base, the right elevational view being a mirror image of the left elevational view.

FIG. 3 is a top plan view of the handheld vacuum base.

FIG. 4 is a bottom plan view of the handheld vacuum base.

FIG. 5 is a front elevational view of the handheld vacuum base; and,

FIG. 6 is a rear elevational view of the handheld vacuum base. 

The ornamental design for a handheld vacuum base, as shown and described. 